Sixteen years after the failure of a plot to replace Bajoran resistance fighter Kira Nerys with a Cardassian sleeper agent, Iliana Ghernor, surgically altered to resemble Kira, a vengeful Ilian Ghernor returns determined to destroy her rival, while the crew of Deep Space Nine must protect the flow of history through two parallel universes. Original.
This book is part of the Star Trek: Deep Space Nine Books series and is book #43 in the series.